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KMID : 0390220200310020267
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Journal of Clinical Otolaryngology, Head and Neck Surgery
2020 Volume.31 No. 2 p.267 ~ p.270
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Case Report: A Case of Bifurcated Phrenic Nerve Identified during Neck Dissection
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Kim Dong-Young
Han Young-Seok
Lee Hyoung-Shin
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Abstract
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Recently, we experienced a case of a bifurcated phrenic nerve during selective neck dissection. A 39 yearold female diagnosed as papillary thyroid cancer and lateral neck metastasis underwent total thyroidectomy, central compartment neck dissection, and selective neck dissection of level II, III, IV and Vb. During lateral neck dissection, bifurcated phrenic nerve originating from the proximal part of phrenic nerve was identified.
Contraction of the diaphragm muscle was identified when nerve stimulator was applied on both bifurcated phrenic nerve. While, accessory phrenic nerve which have contribution from surrounding motor nerves have been reported in the past, bifurcation of nerve from the proximal phrenic nerve has not been reported to the best of our knowledge. Care should be given since one of the branches may be injured if the initially identified branch is considered as the only nerve. Authors report this rare case with a review of literature.
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KEYWORD
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Phrenic nerve, Neck dissection, Anatomical variation
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